Ms. John buys tissues for the school from Staples. There is a cost per box and also a delivery cost. Last month she bought 300 boxes and spent $480. This month, she bought 250 boxes for
$405. Write an equation that represents the total cost for tissues if y is the total cost and x is
the number of boxes.

the graph on the bottom right

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

i would say c

step-by-step explanation: